Factors of 3990

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What are the Factors of 3,990?

Answer

Factors of 3,990:
32 factors: 1, 2, 3, 5, 6 … 1330, 1995, 3990
all 32 factors

1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 57, 70, 95, 105, 114, 133, 190, 210, 266, 285, 399, 570, 665, 798, 1330, 1995, 3990

32 factors · 3990 = 2 × 3 × 5 × 7 × 19 · composite

Underlined — prime: 2, 3, 5, 7, 19 · 1 — neither prime nor composite · others — composite

Factor pairs of 3,990

  • 1 × 3990
  • 2 × 1995
  • 3 × 1330
  • 5 × 798
  • 6 × 665
  • 7 × 570
  • 10 × 399
  • 14 × 285

√3990 ≈ 63.17 — the last pair 57 × 70 sits here; past it pairs repeat.

all 16 pairs
  • 1 × 3990
  • 2 × 1995
  • 3 × 1330
  • 5 × 798
  • 6 × 665
  • 7 × 570
  • 10 × 399
  • 14 × 285
  • 15 × 266
  • 19 × 210
  • 21 × 190
  • 30 × 133
  • 35 × 114
  • 38 × 105
  • 42 × 95
  • 57 × 70

3990 = 2 × 3 × 5 × 7 × 19 → (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 32 factors: add 1 to each exponent and multiply.

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Factors Table

NumberFactors
3,8901, 2, 5, 10, 389, 778, 1945, 3890
3,9001, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900
3,9051, 5, 11, 55, 71, 355, 781, 3905
3,9151, 3, 5, 9, 15, 27, 29, 45, 87, 135, 145, 261, 435, 783, 1305, 3915
3,9201, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920
3,9251, 5, 25, 157, 785, 3925
3,9301, 2, 3, 5, 6, 10, 15, 30, 131, 262, 393, 655, 786, 1310, 1965, 3930
3,9351, 5, 787, 3935
3,9401, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940
3,9451, 3, 5, 15, 263, 789, 1315, 3945
3,9501, 2, 5, 10, 25, 50, 79, 158, 395, 790, 1975, 3950
3,9601, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 132, 165, 180, 198, 220, 264, 330, 360, 396, 440, 495, 660, 792, 990, 1320, 1980, 3960
3,9691, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969
3,9701, 2, 5, 10, 397, 794, 1985, 3970
3,9851, 5, 797, 3985
3,9901, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 57, 70, 95, 105, 114, 133, 190, 210, 266, 285, 399, 570, 665, 798, 1330, 1995, 3990
4,0001, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000
4,0201, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 67, 134, 201, 268, 335, 402, 670, 804, 1005, 1340, 2010, 4020
4,0251, 5, 7, 23, 25, 35, 115, 161, 175, 575, 805, 4025
4,0351, 3, 5, 15, 269, 807, 1345, 4035
4,0401, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040
4,0451, 5, 809, 4045
4,0501, 2, 3, 5, 6, 9, 10, 15, 18, 25, 27, 30, 45, 50, 54, 75, 81, 90, 135, 150, 162, 225, 270, 405, 450, 675, 810, 1350, 2025, 4050
4,0601, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060
4,0701, 2, 5, 10, 11, 22, 37, 55, 74, 110, 185, 370, 407, 814, 2035, 4070
4,0751, 5, 25, 163, 815, 4075
4,0801, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080
4,0901, 2, 5, 10, 409, 818, 2045, 4090
4,0951, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 4095
4,1001, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100

FAQ

What are the Factors of 3,990?

Factors of 3,990: 32 factors: 1, 2, 3, 5, 6 … 1330, 1995, 3990

How many factors does 3,990 have?

Number 3,990 has 32 factors

How many Factor Pairs does 3,990 have?

Number 3,990 has 16 factor pairs

Is 3,990 a prime or composite number?

Composite: 3990 = 2 × 3 × 5 × 7 × 19, so it has 32 factors — a prime has exactly two.

How many factors does 3,990 have excluding 1 and 3,990?

30 — all 32 factors except 1 and 3,990.

See Also